Module ij
Package ij.gui

Class OvalRoi

java.lang.Object
ij.gui.Roi
ij.gui.OvalRoi
All Implemented Interfaces:
Serializable, Cloneable, Iterable<Point>
public class OvalRoi extends Roi
Oval region of interest
See Also:

  • Constructor Details

    • OvalRoi

      public OvalRoi(int x, int y, int width, int height)
      Creates an OvalRoi.

    • OvalRoi

      public OvalRoi(double x, double y, double width, double height)
      Creates an OvalRoi using double arguments.

    • OvalRoi

      public OvalRoi(int x, int y, ImagePlus imp)
      Starts the process of creating a user-defined OvalRoi.

    • OvalRoi

      public OvalRoi(int x, int y, int width, int height, ImagePlus imp)
      Deprecated.

  • Method Details

    • create

      public static OvalRoi create(double x, double y, double width, double height)
      Creates an OvalRoi.

    • getFeretValues

      public double[] getFeretValues()
      Feret (caliper width) values, see ij.gui.Roi.getFeretValues(). The superclass method of calculating this via the convex hull is less accurate for the MinFeret because it does not get the exact minor axis.
      Overrides:
      getFeretValues in class Roi

    • moveHandle

      protected void moveHandle(int sx, int sy)
      Overrides:
      moveHandle in class Roi

    • draw

      public void draw(Graphics g)
      Overrides:
      draw in class Roi

    • drawPixels

      public void drawPixels(ImageProcessor ip)
      Draws an outline of this OvalRoi on the image.
      Overrides:
      drawPixels in class Roi
      See Also:

    • getPolygon

      public Polygon getPolygon()
      Returns this OvalRoi as a Polygon that outlines the mask, in image pixel coordinates.
      Overrides:
      getPolygon in class Roi
      See Also:

    • getFloatPolygon

      public FloatPolygon getFloatPolygon()
      Returns this OvalRoi as a FloatPolygon approximating the ellipse.
      Overrides:
      getFloatPolygon in class Roi

    • getFloatPolygon4

      public FloatPolygon getFloatPolygon4()
      Returns this OvalRoi as a 4 point FloatPolygon (x,y,w,h).

    • size

      public int size()
      Returns the number of corner points in the mask of this selection; equivalent to getPolygon().npoints.
      Overrides:
      size in class Roi

    • contains

      public boolean contains(int ox, int oy)
      Tests whether the center of the specified pixel is inside the boundary of this OvalRoi. Authors: Barry DeZonia and Michael Schmid
      Overrides:
      contains in class Roi

    • containsPoint

      public boolean containsPoint(double x, double y)
      Returns whether coordinate (x,y) is contained in the Roi. Note that the coordinate (0,0) is the top-left corner of pixel (0,0). Use contains(int, int) to determine whether a given pixel is contained in the Roi.
      Overrides:
      containsPoint in class Roi

    • isHandle

      public int isHandle(int sx, int sy)
      Returns a handle number if the specified screen coordinates are inside or near a handle, otherwise returns -1.
      Overrides:
      isHandle in class Roi

    • getMask

      public ImageProcessor getMask()
      Description copied from class: Roi
      Always returns null for rectangular Roi's
      Overrides:
      getMask in class Roi

    • getLength

      public double getLength()
      Returns the perimeter length using Ramanujan's approximation for the circumference of an ellipse
      Overrides:
      getLength in class Roi